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Convert hexa to decimal.

 
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Hello,

Why the following Java code prints Negative value instead of positive.

class BitShift {
public static void main(String [] args) {
int x = 0x80000000;
System.out.print(x);
}
}


Output:- -2147483648
 
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Because the left-most bit is a sign bit. If the sign bit is a 1, the number is negative. If it's a 0, it's positive. The value you have has a 1 in the sign bit, so it is interpreted as a negative number.

Negative Numbers in Java - Two's Complement

Hex to Decimal and Back Again...
[ January 03, 2006: Message edited by: Corey McGlone ]
 
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converting 0x80000000 to devimal gives

1000 0000 0000 0000 0000 0000 0000 0000
----------------------------------------
8 0 0 0 0 0 0 0

as the most significant bit is 1 this negative number so decimail equivalent is - 2(pow)31

regards,
santosh
 
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...and for those of you keeping score, this is a 1.4 topic, but NOT a 1.5 topic!
 
Corey McGlone
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Originally posted by Bert Bates:
...and for those of you keeping score, this is a 1.4 topic, but NOT a 1.5 topic!



Oh, man! They always take away the easy questions.
 
Consider Paul's rocket mass heater.
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